Mark Dalrymple

Mark has been a Mac programmer since 1985 and a professional Unix programmer since 1990, gleefully enjoying the combined world in Mac OS X.  Mark has experience on the client side and server side, being a veteran of several startups, and larger technology operations like AOL and Google. On the back-end, he has been the technical lead for AOLserver, a high-performance web server handling billions of requests per day. On the client-side, he has worked with numerous toolkits, has had code running in space, as well as code running on millions of Macintosh desktops world-wide.  Currently Mark is building iPhone software for Cycling Fusion, helping to bring the worlds of indoor and outdoor cycling together. In addition to being the principal author of  "Learn Objective-C on the Macintosh" and "Advanced Mac OS X Programming", now in its third edition, he has been the technical reviewer for many Cocoa and iPhone titles with Apress. He is also the co-founder of CocoaHeads, the international Mac programmer's group, with chapters in 26 countries on five continents, and organizes the Pittsburgh CocoaHeads chapter.  In his spare time he plays music, wrangles a camera, and makes balloon animals.

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